This story is based on a story nugget provided by nobody102, writer of Scorpion's Disciple. (Which is awesome fyi, go check it out/end shameless plug.)
This is not a crossover with Fullmetal Alchemist, the only element coming for Awakara-Sensei's work is the idea of the gate, and it's still not exactly the same. Hope I portrayed that well enough.
Anyway, without further ado about nothing, lets start this puppy up.

Chapter One - Do You Want To Know The World?

It was, jarring.

One minute he was in the Valley of the End, Sasuke's hand through his chest. The next, there was nothing but white.

"What the hell happened? Did Sasuke really...?"

"Really what?" A voice called out. "Kill you? No, you're not quite that lucky."

Spinning around faster than he thought he was capable of, he saw the strangest figure he'd ever seen.

Well now, that wasn't true, there was really not much strange about the figure, he looked relatively normal, but he did not remember creating any clones since he'd gotten there.

The Doppelganger smirked at him, twisted and dark, something he had recently come to associate with Red Clouds, the smirk looked so out of place on his face, it was unsettling.

"So you're already here huh? That's... strange. Wasn't expecting to see you here for another 5 years at least." The Not-Naruto murmured.

"What do you mean?"

"Hmmm, then again, it doesn't seem like you came here willingly, oh well, fortune favors the gate I suppose." The mirror interrupted.

Gritting his teeth, Naruto growled. That sunnavabitch was not only henge'd like him, but he had the balls to ignore him. 'No one ignores Uzumaki Naruto.'

"Who the fuck are you?" The blonde roared.

Starting slightly, the clone blinked, looking at Naruto, as if he had just realized he was here. Then he laughed. "Oh, now that is a good question. It's a tricky one though. Very, very tricky."

"How so?"

"Well you see, there isn't just one word for me, I'm not that easily quantified."

"Quanti... what?"

"Quantified, means I'm not quite so easy to describe."

"Oh... so then, what are you?"

"I am everything, I am nothing. I am the all, I am the one. I am the truth, I am the lies. I can be your Heaven. I can be your Hell."

"So what? You're God?"

"No, no. Not quite. Consider me, your own little personal Jesus. Let me show you why." A banging noise, like metal slamming into the ground rang through his ears, as a gigantic shadow cast itself over the two.

Black metal. Deep polished black metal. Carved and sculpted with intricate patterns and words, a great tree covering the majority. The thing was at least as tall as the Hokage Tower, if not taller.

"What is that?"

"You want to save your friend? Save the little Uchiha from himself?" the Clone taunted.

Naruto nodded, rendered speechless by the construct dominating the world of white.

"Do you want to know the world, and everything in it? Do you want strength enough to push back any foe? Protect your loved ones?"

"I do." Naruto whispered quietly, turning back around to the figure. Although in the empty space, he may as well have been yelling.

"Then, know the world you shall."

The construct creaked, and Naruto turned around as he felt a draft hit his back. It was a gate. Tow creaking gates easing open to nothing. There was absolutely nothing beyond the doors, just a pitch black darkness

"What is this?"

"The World."

And as suddenly as the gate had appeared, there were eyes, hundreds, if not thousands, of pairs of eyes. Gray iris' surrounded by a series of concentric circles, and staring straight at him. And then he noticed the hands. The black, wispy, hands, grabbing his body. Pulling him into the pitch.

"Wait! What are you doing? Stop it, STOP IT!"

The clone snorted derisively. "Be quiet Shinobi. You wanted this. I asked you if you wanted it, you said yes." He paused eyes sharpening and glowing red. "Deal with your decision and showa little dignity, Ningen yo."

He struggled, he fought, as the hands drew him closer and closer, as the gate swung shut inch by inch. In a meaningless bid for escape. "NOOOOOOOOOOOOOOO!"

And the gates slammed close.

And as soon as it started, it was over.

He was back in the white, out of that gate. What had happened, what was that sensation?

"It was like; all the knowledge in the world... was just stuffed into my head at once." He muttered. "That can't be possible. It isn't possible."

"You're right."

Spinning around, Naruto once again came face to face with the clone. But this time he was different, not as serene as detached as when they'd first met. This thing was something different, the thing that had let him be dragged into that gate. Something he really had no chance of ever understanding.

"It shouldn't have been possible. But there are 9, just 9, unique little beings out there, who have something more than the rest of you little humans. Something more to pay" Smirking the clone eyed Naruto. "But you know what that is, don't you?"

"The Bijuu." He whispered reverently. "What do they have to do with this?"

"Equivalent Exchange, Ningen. Nothing is free." He smirked. "You wanted to know the world, now pay up."

Naruto started as his jacket and undershirt were torn apart, the Yondaime's Shiki Fuin seal appearing, glowing an angry red.

And then the pain hit.

A relentless unending pain, as a storm of demonic Chakra was sucked from the seal, bit by bit, it felt like an eternity as the Chakra was torn from him. He could hear the fox, hear it howling in misery as it was released from one prison, and shoved into another. He could hear his own screams, taste the blood and bile in his mouth, and over it all barely hear the now feral looking clone's voice.

"This is the price for power, real power. The Fox was a crutch, a shortcut, you relied on far too much. You no longer have access to its strength, you will no longer heal inhumanly quickly. You'll have to get by on your own strength Ningen, as is the way God intended."

And then it stopped. The gate was gone, the white had ended. He was back. Back in the Valley of the End.

Sasuke's back turned to him, as the younger boy stumbled away.

"Oi, Teme. We aren't done here."

Sasuke stumbled slowly as he moved away from Naruto's body. His eyes bleeding.

What had he done? Naruto was dead? No, no he hadn't meant to. Naruto's Rasengan was set to collide with his Chidori. They were going to deadlock again, go back to square one. Why? Why had Naruto pulled back? Let his Rasengan fade away?

He knew he said he was going to kill Naruto. To gain the Mangyeko he had to. The guilt of killing your best friend, in cold blood. To gain the same eyes as Him.

But he couldn't. Naruto needed to survive. He had to. His brother in all but blood, his brother where it mattered, was supposed to live, achieve his dream as Hokage. Live a long life, spawn an untold amount of little Dobes.

But now, Sasuke had destroyed any kind of future where Naruto would reign as Rokudaime, become a family, gain the family he deserved.

Clutching his stomach he heaved out the contents of his stomach. Oh he had done it alright. He had gotten those same goddamn eyes, he certainly felt enough guilt.

Standing up straight he looked towards the statue of Uchiha Madara, his fore father and the one man who could stand against the Shodai Hokage.
Was this the future he envisioned for his clan? Two members left. Brothers out to kill each other, both having killed their closest friends for power, was that what he had expected of one of the most powerful clans in the world?

He doubted it.

He started walking, away from Konoha, away from Naruto.

He was a missing nin now. A traitor, and a killer.

"Oi, Teme." No. No it couldn't be. "We aren't done here."

Turning slowly, he felt his Sharingan flare into life as he looked back at where he'd left the body at the edge of the river. It was real. He wasn't dead.

There, standing straight and proud, not at all corpse like, his ruined jacket hanging in shreds off his shoulders was Uzumaki Naruto.

Alive and well. Chakra rolling off of him, in waves.

His Iris', a deep blue, ringed by a series of concentric circles.

"Come on Sasuke, I told you." Naruto growled, his eyes narrowing. "I'm dragging your sorry ass back home, even if I have to break every single bone in your body to do it."

Oh shit, did I just give Naruto the Rinnegan?

Well, sort of. How can I, sort of, give some one the Rinnegan? Well we will get to that, eventually. For now, just know that I am content in what I am doing, and sure in my execution of the idea, err somewhat.

Hey, I don't plan my stories out, but hopefully it will be something you guys have never seen before.

Speaking of, we can pretty much nix all hope of Four Front War and Spin me a Ninja Yarn ever going any further than they are. Not to say the same for the rest. Finally figured where I'm going with Playing With Reality 2nd Chapter of Kidpool the II and the Philospher's Stone is half way to completion and Cliche Chapter 3 is just about ready to drop. So excited. Anyway, what did you think? Did you like, looking forward to more? Drop me a line and tell me what you think, don't be shy now.

And again, thanks to nobody102 for letting me do this, if you haven't already, go check out Scorpion's Disciple. Is epic sauce by the gallon. Also, should mention, the whole "Knowing the World" thing isn't mine and belongs to Undead Artist and is part of his Story Ace of Spades. Another awesome fic which is well worth the time. Go read now.